Pressure-reducing valve.



E1 V. ANDERSON.

PRESSURE REDUClNGvVALVE. APPLICATION 11115.11 SEPT. 1. 1914.

Patented Feb. 29, 1916.

R O T N E V N uNiTED s 'rATEs A'rEN'r EDWARD v. ANDERSON, or MoNEssEN, PENNSYLVANIA, ASSIGNoR or ONE-imm* 'ro CHARLES E. GQLDEN; or cnAE'roN', PENNSYLVANIA.

Y IrnESsUma-nEnUoINe vALvE.

Specification of Letters Patent.

Application led September 1, 1914. Serial No. 859,643.

rovements in Pressure-Reducing Valves, of"

which the .following is a specification.

My invention relates generally to valves for regulating andmaintaining a pressure lower than.. the pressure in thesource o-f a fluid supply; and `its primary objects are to simplify, and render more exact, eiicient.

. and regular, the operation .of such valves.

The invention is illustrated in the accompanying drawing, which is a central vertical Section ofthe valve casing and its appurtenances; l

In the casing 1, I vprovide a double partition 2 between the inlet (I) and the outlet (0),'and the two openings in the parttion 2 are closed by the two valves 3 and 4 made integral on a stem 5 which atv the top carries a piston 6 working in a cylinder 7 set in the lcasing, Vand at the bottom is provided with a lhead 8 into. which there is screwed a cylinder 9 carrymg at the bottom a plug 10, which is attached to a flexible diaphragm 11.` For supporting these parts the valve casing 1 has attached. to it a supplementary vcasing -v illustrated itsuse,

"lowing: c pressurereducng valve comprlsing Y a4 casing having a double apertured` dia-v 12 provided at the bottom with acap 13 .holding thediaphragm 11. i The valve, valve' f stem, piston 6 and tube-9, are all normally pressed'upward by Ycompression spring 14, carried on on a Screw 16threaded through the bottom of the cap` 13. The bottom of the casing 1,2 has a small screw-plugged port 17 and a port 17a'for spring containing tube 9; itbeing understood that this liquid. fills in 'around the plug 10 and covers the diaphragm 11.-

On top of the valve casing 1, I'provide'a hood 18, a screw 19and handwheel 20, for

forcibly closing the valve manually, by con'- chamber (O) will take effect upon .the head` 8, .by cylinder 9 and plug 10 .also on .the

a traveling block 15, which rests j A introducing a liquid-,into the spacel between tubular casing' 12 andv thel y described. I p

2. A pressure reducing valve comprising. 100

diaphragm 11, tendingl to close the valve,

Patented Feb. 29, 191e.`

the. valve will. be maintained open by the' assistance of spring 14, as long as the'pre'ssure in thel outlet (O) is below a certain` will depress it and tube 9 against the spring 14,' and seat the valve disks 3 and 4. This action is automatic.

The diaphragm 11 is protected from contact with the steam by the liquid in the casing 12, and meanwhile the spring 14 is entirely protected from both steam and water. The piston 6 cushions the movement of the valve inbcth directions, preventing any water hammer in either opening or closing.

It will bie evident that the valve isaccurate, Y f

and sensitive and constant, and that although normally automatic,itf may be operated by hand when desired. All parts of the mechanism are entirely inclosed inthe casing vand protected from injury'by steam or water or mal-adjustment.

The many advantages of such construction and operation will occur to those Vfamiliar withfthe art.

Having thusdescribed my invent1on and what I claim` is the foltwo Valves seating thereon and carl' phragrn,

stem a dash-pot piston and rying on their a movable cylinder," for said piston,

a stationary cylinder an adjustable spring in closed in the movable cylinder and a exible Y diaphragm attached to the cylinder and exposed to the low pressure, whereby the valve4 maybe Set to close at a certain maximum of pressure on lthe low side,

a casing with an apertured diaphragm, a valve closing said aperture' and carrying substantially as y on its'stem a movable tube, a supplementary Y casing containing said-tube and closedat the bottom by the tube and a diaphragm connected thereto, a spring in the tube adapted for regulating-the eective pressure on said diaphragm, and means pro.- viding a liquid seall for the diaphragm and as described.v

. of the spring eii'ective to open-the valve is 3. A pressure reducing valve comprising a casing, a valve, springs normallyvholding the valve open, av das'hpot attached to the` valve, a diaphragm varranged to overcome t e spring pressure by-iuid pressure on the 10W side of the 'valve casing, and a hand operated closingdevice for the valve.

bination' of a casing having an apertured diaphragm, a valve and a stem carrying the Valve and also a fiuidtight cylinder, a supplementarv casing surrounding the cylinder, a flexible diaphragmclosingl the supple- 'mentary chamber and fixed to the cylinder, a'spring in thecylinder seated on a support independent thereof, whereby the pressure 5. In a pressure reducing valve, the combination of a casing having an apertured diaphragm, a balanced stein valve adapted to seat i Aon said diaphragm, a supplementary casing,

the' valve-stem extending'into the 4supplementary casing and bearmg on a flexiblediaphragm closing said supplementary cas- 4.'In a pressure reducing valve, the com-l ing, a spring bearing on the valve stem and adapted to force the. valve open inopposition'to Huid pressure on the diaphragm from the outlet side thereof. l

In ,testimony whereof I have hereunto signedmyname in the presence of a subscribed Witnessl A vEDWARD V.ANDERSON. Witness: v l

FREDK STAUB. 

